refactor: use the new utils.ps1 script for operations

01-essentials/03-branching-and-merging/verify.ps1

@@ -12,47 +12,20 @@
 
 $script:allChecksPassed = $true
 
-# ============================================================================
-# Helper Functions
-# ============================================================================
-
-function Write-Pass {
-    param([string]$Message)
-    Write-Host "[PASS] $Message" -ForegroundColor Green
-}
-
-function Write-Fail {
-    param([string]$Message)
-    Write-Host "[FAIL] $Message" -ForegroundColor Red
-    $script:allChecksPassed = $false
-}
-
-function Write-Hint {
-    param([string]$Message)
-    Write-Host "[HINT] $Message" -ForegroundColor Yellow
-}
-
-function Write-Info {
-    param([string]$Message)
-    Write-Host "[INFO] $Message" -ForegroundColor Cyan
-}
-
+$challengeRoot = "$PSScriptRoot\challenge"
 # ============================================================================
 # Check challenge directory exists
 # ============================================================================
 
-if (-not (Test-Path "challenge")) {
+if (-not (Test-Path $challengeRoot)) {
     Write-Host "[ERROR] Challenge directory not found." -ForegroundColor Red
     Write-Host "Run .\setup.ps1 first to create the challenge environment." -ForegroundColor Yellow
     exit 1
 }
 
-Push-Location "challenge"
-
-if (-not (Test-Path ".git")) {
+if (-not (Test-Path "$challengeRoot\.git")) {
     Write-Host "[ERROR] Not a git repository." -ForegroundColor Red
     Write-Host "Run ..\setup.ps1 first to create the challenge environment." -ForegroundColor Yellow
-    Pop-Location
     exit 1
 }
 
@@ -62,24 +35,7 @@ Write-Host "`n=== Verifying Module 03: Branching and Merging ===" -ForegroundCol
 # Detect the main branch name (could be main, master, etc.)
 # ============================================================================
 # Try to get the default branch from remote origin first
-$mainBranch = git symbolic-ref refs/remotes/origin/HEAD 2>$null | Split-Path -Leaf
-if (-not $mainBranch) {
-    # Fallback: try to detect from local branches
-    $allBranches = git branch --list 2>$null | ForEach-Object { $_.Trim('* ') }
-    if ($allBranches -contains "main") {
-        $mainBranch = "main"
-    } elseif ($allBranches -contains "master") {
-        $mainBranch = "master"
-    } else {
-        # Get the default branch from git config
-        $mainBranch = git config --get init.defaultBranch
-        if (-not $mainBranch) {
-            # Ultimate fallback: use the first branch
-            $mainBranch = $allBranches | Select-Object -First 1
-            if (-not $mainBranch) { $mainBranch = "main" }
-        }
-    }
-}
+$mainBranch = Get-MainBranch
 Write-Host "Detected main branch: $mainBranch" -ForegroundColor Cyan
 
 # ============================================================================